The excitement and anticipation ahead of Kanye West ’s headline slot at Glastonbury is reaching fever pitch, and now it’s rumoured that Eminem is set to join him on stage.

Printed passes for ‘Marshall Mathers’ are said to have been seen backstage on Worthy Farm ahead of tonight’s headline slot.

Kanye previously joined Eminem on the track Drake’s track Forever in 2009, along with Lil Wayne, but have not worked closely together.

Is Eminem about to join Kanye on the Pyramid stage?

A source said: "He is thought to have arrived at the same time as Kim and Kanye and there are passes with Marshall Mathers printed on them backstage. It's going to be a massive show if he performs with Kanye during his headline set."

A source told the Daily Star newspaper: "Chris loves Glastonbury and is part of the family there.

"With this being Kanye's first time he's asked Chris for advice and wants to make sure it's a special performance."

Kim Kardashian and Kanye West arrive at Glastonbury (Image: David Sims/WENN.com)

Meanwhile, producer Mike Will Made It revealed fans can expect an exciting track from Kanye and fellow hip hop star 2 Chainz, sparking speculation he could be a surprise act during the rapper's much-anticipated performance.

Alongside a photo of himself with Kanye and 2 Chainz, he wrote: "On Saturday, Expect something new. (sic)"

The news comes days after the festival's organiser Emily Eavis revealed fans can expect the 'Gold Digger' hitmaker - who has two-year-old daughter North with wife Kim Kardashian West - to "take it big" when he appears at the event.

She said: "I think he'll create an incredible show. What he's talking about at the moment is very exciting. I think he's going to take it big. I can't say anything - I can't give anything away!"